Commitments and Contingent Liabilities (Details) - Commitments and Unused Lines of Credit - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fixed Rate
The contractual amounts of financial instruments with off-balance-sheet risk at year end
Total contractual amounts of financial instruments with off-balance-sheet risk	$ 80,567	$ 85,558
Variable Rate
The contractual amounts of financial instruments with off-balance-sheet risk at year end
Total contractual amounts of financial instruments with off-balance-sheet risk	$ 344,970	$ 286,876